Cooling device



FIG. 1 is a top, front, front perspective view of a cooling device showing my new design having a fan located thereon;

FIG. 2 is a top plan view thereof, the bottom plan view is not shown as it is flat and unornamented;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a front elevation view thereof; and,

FIG. 6 is a rear elevation view thereof. 

The ornamental design for a cooling device, as shown and described. 